170 g of NH3 completely vapourises at 3342 C and 1 bar press

Question

17.0 g of NH_(3) completely vapourises at -33.42^°C and 1 bar pressure and the enthalpy change in the process is 23.4 kJ mol^(-1). The enthalpy change for the vapourisation of 85 g of NH_(3) under the same conditions is _________ kJ.

DivineJEE · Accepted Answer

Number of moles of NH_3=5 So, required Delta H=5 x 23.4 =117 kJ

Explanation

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